I have two Fox .74's with relatively low time and both
run in open cowled planes on the same fuel and one
over heats no matter how rich it is set it seems to
have an eight minute limit even if most of the flight
is at low speed. Good idle and transition and first
flip start.Bearings are good and so far I cannot find
a leak. Today I sent it off so rich it smoked and four
cycled on 20% castor fuel, no change. Dead stick on
a low downwind pass.[

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Ralph